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Do you have a multi meter?

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rickmcinnis@dogwoodfabrics.com

In Reply to: RE: ESI Juli@ Mod: BNC Jack Mounted/Soldered Directly to the Board ? posted by gjwAudio on October 13, 2008 at 21:55:03

If you do, use the breakout cable's SPDIF out to track back to the board where the signal is coming from. This is easy to do. If you have a multi meter!

I have not yet attached the BNC connector to the board yet, at this point it is simply connected to the break out cable. Though this is on my agenda of things to do.

The trick would be how you attach the BNC; I think you would have to use a small length of wire between the connector and the board.

Alfred, your help is needed yet again? What do you recommend for this?

The breakout cable is not impressive, this is true, but it must be up to the job. I have had no rouble passing 24/192 through it. Nonetheless, getting rid of that rat's nest of wires and most importantly, the connector, has to make an improvement.

Bye,

Rick McInnis

Follow Ups:

RE: Do you have a multi meter? - sonics 13:28:33 10/14/08 (6)
hi rick
it is a littlebit tricky with my poor english.
you can solder the cable direct to the julyboard. the pins you can locate with an ohmmeter. you put the ohmmeter between the pins oft the digitalbreakout and by trial and error you will find the coresponding pin on the board. on the dacs side you put the bnc and you have to crimp the connections to the bnc connector to be in the 75 Ohm region..
btw. i tried direct soldering , but optical out with a good optical cable was better than direct soldering. But!!!! no 192/24.
bye
alfred
- BNC mod for M-Audio 2496 card - gjwAudio 15:47:59 10/14/08 (5)
  Hi Rick & Alfred
  Thanks for your suggestions. I was hoping a PCB layout diagram for the Juli@ might exist somewhere - to show the way. The hunt-and-peck method (using multi-meter) will have to do.
  
  My old M-Audio Delta 2496 card was upgraded with BNCs, which were added like a daughter-card arrangement. The digital I/O is normally found on a breakout cable - and not the best connection in the universe. The BNCs were wired in parallel (easy to find the points labeled on that PCB) and mounted to a spare blank PC slot cover, which was attached to the backplane of the Delta.
  
  This is one approach to consider for those who want to retain the analog portion of the Juli@ card... just not so easy to solder to the small traces ESI has used.
  Cheers,
  Grant
  That's not a Toy... IT'S A TOOL !!
  
  Edits: 10/14/08
  - Very clever, gjw - rickmcinnis@dogwoodfabrics.com 16:46:27 10/14/08 (4)
    gjw,
    
    That is a great way to do it.
    
    I am not using a regular computer case so I will have to do something a little different, but for most folks out there that has to be the most elegant approach. Though, with JULI@, minus the analog board, there will not be anything to attach the daughter to. Daughter will have to dangle until secured into a slot.
    
    Alfred,
    
    I know where to connect to the PCB, it is easy to track. I was wondering how to situate the connector. Of course, I would like to solder the plus pin directly into the board but, not knowing what is going on in there, I worry I could do damage. I guess I will have to use short wires and then implement something to secure the BNC and still be able to remove JULI@ when necessary. In my non-standard case I do not have to have the BNC pointed in any particular direction. I hope I am making some sense to you. I greatly appreciate your willingness to write in English to tell us of what you have done!!!
    
    Thanks to both of you,
    
    Rick McInnis
    - If your Juli@ has analogue section removed, use the vacant holes... - gjwAudio 20:28:38 10/14/08 (3)
      Hi Rick
      
      Thanks for the compliment - although the credit belongs to the fellow who does mod work for me :). The "sidecar" worked out great for the Delta 2496.
      
      For the Delta 1010 that replaced it, the S/PDIF ports were part of the card itself - no nasty breakout cable. The BNCs just fit in place of the RCAs (using the existing holes on the backplane for support.
      
      You might consider the same scheme for your Juli@ - if the analogue section has vacated the area. Be sure to provide for both IN and OUT - you never know when you'll get the bug to clock the Juli@ from an external source.
      
      Oh... and I'd love to see a photo of the finished work :)
      
      Cheers,
      Grant
      
      That's not a Toy... IT'S A TOOL !!
      - RE: If your Juli@ has analogue section removed, use the vacant holes... - sonics 00:56:59 10/18/08 (2)
        
        In Reply to: RE: If your Juli@ has analogue section removed, use the vacant holes... posted by gjwAudio on October 14, 2008 at 20:28:38
        
        hi
        you can solder the cable direct to the juliboard and crimp a bnc only to the DACs side.i tried both ( bnc on both sides) but you have two more solderingpoints between dac and PC.
        bye
        alfred
        
        RE: If your Juli@ has analogue section removed, use the vacant holes... - gagnem 05:43:19 10/18/08 (1)
        
        In Reply to: RE: If your Juli@ has analogue section removed, use the vacant holes... posted by sonics on October 18, 2008 at 00:56:59
        
        Hi Alfred,
        
        I found the 2 pins for "digital out" on the Juli@ connector with my ohmmeter, but my problem is when I plug the connector to the board (with the board out if the PC) I now get a closed circuit between the two pins of my connector. So which is which ?
        I think I should do it with the card powered but I hesitate.
        
        So what holes did you use on the board for soldering Gnd and Signal wires ?
        
        Thanks a lot
        
        Martin
        
        RE: If your Juli@ has analogue section removed, use the vacant holes... - sonics 06:19:52 10/18/08 (0)
        
        In Reply to: RE: If your Juli@ has analogue section removed, use the vacant holes... posted by gagnem on October 18, 2008 at 05:43:19
        
        hi martin , if you have found the two pins it's easy.
        you put the ohmmeter between the ground of the connected breakout-digital out cable and
        you will find the ground pin of the july in the pin with zero Ohm.
        bye
        alfred
        PS the pin near to the rear plate on the bottom of the board is plus
        
        Edits: 10/18/08

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